Eltek TU 1004 User Instructions Download Page 2

Application

Locating the RC250

LED Indicator 

RC250 programming leads

File  Properties 

For users who wish to use the Eltek GenII series of transmitters with third party or 

proprietary software. The RC250 can also be used to interface GenII transmitters to an 
existing data acquisition system such as the Datataker DT80 using Modbus.

The RC250 and antenna should be located in a position clear of interference, in particular 

that generated by computers and monitors, and away from surfaces that can compromise 
RF performance e.g. steel or damp or reinforced walls. Use of the optional dipole antenna 

will maximise coverage.

A red LED on the top of the RC250 Indicates the receiver has successfully received a valid 
data packet.

A single serial port on the PC can be used but this will mean having to change over the 
LCTX3 lead and LC68 as required. Note, in 

the PC com port can be 

nominated. Y

Top panel connections

"

"

LC68 – used to program the RC250 from the PC serial port or via the USB adaptor if 

no serial port is available

LCTX3 – used to program the Transmitter from the PC serial port or via the USB 

adaptor if no serial port is available

ou can use the 

 in Windows to list the COM ports available 

on your computer. Type 

 in the Windows 7 search box to open this, and 

look for 

. USB to serial converters supplied by Eltek are listed as 

.

Device Manager

Device Manager

Ports

Prolific USB-to-

serial

12V DC

regulated

comms

12VDC
(inner is -ve)

Comms
(6 way mini Din)

Page 2 of 8

Summary of Contents for TU 1004

Page 1: ...ot receive a message from a transmitter within a configured time the stored value will be set to no data For more detail see P6 No Data interval Example application Typically data from the RC250 to th...

Page 2: ...n the top of the RC250 Indicates the receiver has successfully received a valid data packet A single serial port on the PC can be used but this will mean having to change over the LCTX3 lead and LC68...

Page 3: ...es for ModBus communications See ModBus Configuration section Buttons Get TX Get the current configuration from the Transmitter Set Interval Set TX Interval use the drop down menu Set Sensor On Time A...

Page 4: ...equired Get the current or start a new RC250 Configuration using the button you should see the details appear in the right hand list box Now connect each transmitter to the PC using an LC TX3 programm...

Page 5: ...communications and should be investigated Nbr TX Is the number of successful transmissions received indicating reliability of performance and is for statistical purposes only Columns in the RX Config...

Page 6: ...ss Base address of Holding Registers containing age of each value When reading the values from the RC250 the only Function Code that can be used is Read Holding Registers 0x03 The registers containing...

Page 7: ...meaning 49 3 RH CRC Hi ac CRC Lo d9 Raw Reg Address Values other than pulse counts contain values less than 65000 Numbers starting from 65441 0xFFA1 are used to represent out of range or fault condit...

Page 8: ...dard optional accessory type LW ANT SMA The maximum recommended lead length is 10m Antenna compact Yagi Lightweight 3 element Yagi providing up to 6db gain optional supplied with 5m lead and plug Temp...

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